Demon,
Cat 6 cable differs from CAT 5 only in quality. It's considered higher quality of the standard CAT 5 and used for gigabit ethernet networks.
In Cat 5 100Mbit networks, we use only 2 of the 4 available twisted pairs, with Cat 5e/6 1000Mbit networks, all 4 pairs are used, eaching giving a max of 250Mbit, hence 4x250=1 Gig.
From memory, there is a limitation for the maximum length of a gigabit network which is 25 meters ... can anyone else confirm this ?
